More Information

Darth Vader's base is designed to connect with Power F/X Obi-Wan Kenobi's base, which then recreates the lightsaber battle from the Death Star (Take a look at the lightsaber duel set-up with both bases connected)

Vader has a button in the back, which when pressed lights up the lightsaber

The lightsaber stays lit for about 15 seconds before it automatically turns off